<template>
    <el-menu default-active="1-4-1" class="el-menu-vertical-demo" background-color= '#545c64'  text-color='#fff' active-text-color='#ffd04b'
        @open="handleOpen" @close="handleClose" :collapse="isCollapse">
        <h3>通用后台管理系统</h3>
        <el-menu-item :index="item.path" v-for="item in noChildren" :key="item.path" @click="toMenu(item.name)">
            <i :class='"el-icon-" + item.icon'></i>
            <span slot="title">{{ item.label }}</span>
        </el-menu-item>
        <el-submenu index="1" v-for="item in hasChildren" :key="item.path">
            <template slot="title">
                <i :class='"el-icon-" + item.icon'></i>
                <span slot="title">{{ item.label }}</span>
            </template>
            <el-menu-item-group v-for="items in item.children" :key="items.path" :index='items.path'>
                <el-menu-item slot="title" @click="toMenu(items.name)">{{ items.label }}</el-menu-item>
            </el-menu-item-group>
        </el-submenu>
    </el-menu>
</template>

<script>
import { mapState } from 'vuex';
export default {
    data() {
        return {

        };
    },
    computed: {
        noChildren() {
            return this.asyncMenu.filter(item => !item.children)
        },
        hasChildren() {
            return this.asyncMenu.filter(item => item.children)
        },
        ...mapState(['menu', 'isCollapse']),
        asyncMenu(){
            return this.$store.state.tab.menu
        }
    },
    methods: {
        handleOpen(key, keyPath) {
            console.log(key, keyPath);
        },
        handleClose(key, keyPath) {
            console.log(key, keyPath);
        },
        toMenu(name) {
            this.$router.push({
                name
            })
        }
    },
}
</script>

<style lang="less" scoped>
.el-menu-vertical-demo:not(.el-menu--collapse) {
    width: 200px;
    min-height: 400px;
}

.el-menu {
    height: 100%;
    border: none;

    h3 {
        color: #fff;
        text-align: center;
        line-height: 48px;
    }
}
</style>